anechoic chamber

1、 Program features:

This medical device is ME medical electrical equipmentanechoic chamberThe testing system is designed and manufactured for customers' artificial AI intelligent surgical robots, ME medical electrical equipment, CT ultrasound products, children and adolescents' vision correction devices, and other products. Our company meets the noise testing requirements in YY 9706.108-2021 medical electrical equipment; GB/T 3767-2016 Acoustics - Determination of Sound Power Level and Sound Energy Level of Noise Sources - Engineering Method for Approximate Free Field Above Reflecting Surface by Sound Pressure Method; GB/T 6882-2016 Acoustics - Determination of sound power level and sound energy level of noise sources - Precision method for anechoic and semi anechoic chambers; Design the anechoic chamber testing system according to standards such as ISO3745-2003, ISO7779, GB/T4214.1, GB/T4214.4, and GB/T3785.1.

This system verifies compliance with requirements through inspection and functional testing of the alarm system, as well as inspection of relevant confirmation documents. Measure the driving signal of the audio transducer using an oscilloscope or other suitable instrument that can cover the rise or fall time of the measured frequency and waveform. The acoustic indicators in the design include background noise, cutoff frequency, available space, vibration reduction, etc. On the premise of meeting the acoustic indicators, the design also considers the convenience of use, the installation and handling of split doors, test specimens (products), ventilation conditions, instrument wiring, monitoring conditions, indoor environment, etc.

This testing system is safe and reliable, ensuring the safe and reliable operation of the system. Ensure the physical and mental health of the personnel working in the soundproof room or soundproof room site, and extend the service life of the soundproof room system. And create a safe, reliable, aesthetically pleasing, and comfortable workspace for the staff. Adopting the current UL full wave sound insulation and absorption composite material.

1. Test main products: active medical devices, ME equipment and other products

Every anechoic chamber designed by our company is people-oriented and strives for excellence. And it has the following characteristics:

1. Combination design, movable, easy to install and disassemble;

2. Fireproof, heat-resistant, moisture-proof, sturdy and durable;

3. Can meet the needs of ventilation, lighting, etc;

4. Beautiful appearance, color options available;

5. Has efficient sound absorption and insulation effects.

2、 Technical parameters:

2.1 Overallanechoic chamberAcoustic technical parameters: According to the current national standards and the acceptance criteria for free field radius, it meets the allowable difference range between measured sound pressure level and theoretical sound pressure level listed in ISO3745 and GB6882-86 A.3.4, as well as the relevant electromagnetic compatibility technical principles and current regulations of national standards.

2.2 Allanechoic chamberThe acoustic technical parameters are listed in the table below

2.3 The acceptance criteria for the free field radius comply with the allowable difference range between the measured sound pressure level and the theoretical sound pressure level listed in ISO3745 and GB6882-86 A.3.4.

2.4 Halfanechoic chamberThe structural parameters

3、 All in allanechoic chambermajor component

wholeanechoic chamberSolution: (This solution will be adjusted based on the final experimental results)

Based on the current site conditions of your company, a schematic diagram is drawn as follows:

3.1 External sound-absorbing layer: The internal air layer prevents resonance and moisture.

Material: Heat resistant Pet covered sound-absorbing board

3.2 Internal sound insulation layer: Material: steel reinforcement skeleton+internal composite sound insulation board. Feature: Consistent sound insulation effect without reducing sound insulation and waterproofing.

3.3 Ground materials: steel structure+concrete cement+ceramic flooring+sound-absorbing wedges+load-bearing steel mesh. Features: Special vibration isolation bed and bottom sound absorption can be set up.

3.4 Soundproof door: Size: Designed according to requirements. Attachment: Special hinge for door handle, rubber seal. Structure: Two layer structure (soundproof door+sound-absorbing door)

3.5 Vibration isolation structure: steel structure+concrete cement+ceramic floor+damping shock absorber. Natural vibration frequency: below 5Hz.

3.6 Installing a silencing air conditioning system

3.7 Fresh air exchange system

3.8 Hardware and other electrical control boxes for data acquisition and recording system (optional)

3.9 Data analysis and processing system software (optional)

3.10 Measurement and Control Room